330 BULLETIN 19, UNITED STATES NATIONAL MUSEUM. 



t*Sciurus yucatanensis yucatanensis (Allen). 



1877. [Sciurus carolinensis] var. yucatanensis Allex, Monogr. 



N. Amer. Rodentia, p. 705. August, 1877. 

 1885. Sciurus carolinensis yucatanensis True, Proc. U. S. Nat. 



Mus., vol. 7 (1884), p. 595. 1885. 

 1897. Sciurus yucatanensis Allen, Bull. Amer. Mus. Nat. Hist., 



vol. 9, p. 5. February 23, 1897. 

 Type Locality. — Merida, Yucatan. 

 Range. — Arid tropical forests of peninsula of Yucatan. 



t*Sciurus yucatanensis baliolus Nelson. 



1901. Sciurus yucatanensis haliolus Nelson, Proc. Biol. Soc. 

 Washington, vol. 14, p. 131. August 9, 1901. 



Type Locality. — Apazote, Campeche, Mexico. 



t*Sciurus thomasi Nelson. 



1899. Sciurus tliomasi Nelson, Proc. Washington Acad. Sci., 



vol. 1, p. 71. May 9, 1899. 

 Type Locality. — Talamanca, Costa Rica. 

 Range. — Humid tropical forests of eastern Costa Rica. 



*Sciurus adolphei adolphei (Lesson). 



1842. Macroxus adolphei Lesson, Nouv. tabl. regne animal, 



mamm., p. 112. 

 1899. Sciurus adolphei Nelson, Proc. Washington Acad. Sci., 



vol. 1, p. 73. May 9, 1899. 

 Type Locality. — Realejo, Nicaragua. 

 Range. — Tropical lowlands on west coast of Nicaragua. 



*Sciunis adolphei dorsalis (Gray). 



1848. Sciurus dorsalis Gray, Proc. Zool. Soc. London, p. 138. 

 1899. Sciurus adolphei dorsalis Nelson, Proc. Washington Acad. 



Sci., vol. 1, p. 74. May 9, 1899. 

 Type Locality. — "Erroneously given as Caracas, Venezuela. 



(Specimens from Liberia, Costa Rica, are typical.)" — Nelson. 

 Range. — Comparatively arid parts of tropical western Costa 



Rica from near Alajuela (or perhaps even farther south) north 



to district about Liberia, the peninsula of Nicoya, and perhaps 



adjacent part of Nicaragua. 



Sciurus melania (Gray). 



1867. Macroxus melania Gray, Am. and Mag. Nat. Hist., ser. 3, 

 vol. 20, p. 425. 



1902. Sciurus melania Bangs, Bull. Mus. Comp. Zool., vol. 39, 

 p. 22. April, 1902. 



Type Locality. — Point Burica, Costa Rica. 



Regarded by Bangs (Bull. Mus. Comp. Zool., vol. 46, p. 212, January, 1906) 

 as "hardly a species (or subspecies) in the true sense of the term," therefore 

 identical with S. adolphei dorsalis. 



